A U.S. drone strike hit northwest Pakistan but details are still emerging, a U.S. government official said on Friday.
Saleh al-Somali, the man in charge of al-Qaeda's operations outside the Afghan-Pakistan region, was killed by a missile on Tuesday, the official, who declined to be named, said on Friday.
"Nothing has been definitively confirmed, but it's possible that a suspected al Qaeda figure has died," the U.S. official claimed earlier, who declined to be named.
The figure killed was not believed to be either al Qaeda leader Osama bin Laden or his No. 2, Ayman al-Zawahri, U.S. officials said.
Pakistan officially objects to the U.S. strikes. It says they violate its sovereignty and stoke public anger against U.S..
Pakistan Taliban chief Baitullah Mehsud was killed in a similar U.S. strike in August.
North Waziristan neighbours South Waziristan, where Pakistan deployed about 30,000 troops in October as part of its offensive against the Taliban,